You are like the ex-smoker who has nothing but vitriol for smokers. Well done for losing weight, a shame that you now demonize fat people, call them names, call them stupid. I'm sure when you were overweight you would not have appreciated someone coming up to you and saying "Hey fattie! You're pretty fat you fattie fat fuck. You must be pretty stupid to be so fat, fattie".
There are many reasons for being overweight, how many reasons are there for being a sanctimonious prick?